Assessment Findings – 6801 – Scarborough Drilling And Completions Environment Plan

Written by Claude Haiku 4.5 from the extracted text on 27 Feb 2026. It can miss or misread redacted and scanned pages. Check the source before relying on it.

NOPSEMA assessed Woodside Energy Scarborough Pty Ltd's Drilling and Completions Environment Plan (Assessment ID 6807) for the Scarborough petroleum activity. The assessment examined source control arrangements and worst-case discharge scenarios under OPGGS(S) regulations. Analysis confirmed the Scarborough reservoir contains primarily methane (95%) and nitrogen (4%) with negligible liquid hydrocarbons. In a worst-case loss of well control, the well would discharge dry gas at 1.666 billion standard cubic feet per day over 67 days. The assessment concluded that released gas would dissipate as bubbles in the water column, with methane dissolution and biodegradation occurring during upward transport, with minimal environmental impact due to the deep-water location and gas solubility characteristics.